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Before you can start writing or running. Java programs, you need to download some software. (The animated illustrations are Java programs, so they won’t run if you don’t do the download.)
Downloading is free. After Java is loaded on your hard drive, you have to follow a few steps to install it. These aren’t difficult, but there’s room for error, so please be careful. Complete instructions are explained in Appendix A, “Downloading and Installing Java.”
And now you’re ready. Have fun!
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